What do rooflight upstands & kerbs in Marlborough involve?
Thinking about rooflight upstands & kerbs in Marlborough? The short answer: insulated kerbs built and waterproofed to suit your rooflight. The longer answer depends on your roof, which is why we survey before we price.
Barn and chapel conversions in the South West often need bespoke or shaped rooflights to suit the original structure. In Marlborough, as anywhere, rooflight upstands & kerbs are the usual choice for new flat-roof openings and rooflight replacements.
From Marlborough to Swindon, Devizes and Chippenham, the same survey-first process applies: measure, specify, fix the price, then fit.
Choices for your Marlborough project
- Timber upstands with insulation
- Internal plaster-box linings
- Upstand repairs and rebuilds
- Proprietary insulated kerbs
- Raised upstands for deep green or ballasted roofs
- Correct height above the finished roof
- Fixings and falls agreed with the rooflight maker
What to check first
- Upstand size must match the unit within a tight tolerance
- Membrane compatibility with the rooflight's sealants
Do you need permission in Marlborough?
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
Read the planning permission guide before you commit to a design.
Guide prices for Marlborough
Prices below are shown including and excluding VAT. In Marlborough, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or raised upstand | £715 – £1,195 | £595 – £995 |
| Standard insulated upstand Typical | £475 – £715 | £395 – £595 |
| Small upstand on new roof | £355 – £475 | £295 – £395 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Nearby towns
Other services in Marlborough
Questions about rooflight upstands & kerbs in Marlborough
How high should a rooflight upstand be?
High enough to meet the rooflight manufacturer's minimum above the finished roof surface — commonly 150 mm. On roofs with deep finishes, such as green roofs, it needs to be taller.
What roof coverings do you work with?
Single-ply, EPDM, felt, GRP and liquid-applied systems — or we coordinate with your roofer.
Can an old upstand be reused?
If it is sound, square, insulated and the right size. Often it is cheaper to rebuild than adapt.
Is the survey in Marlborough free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
How do I book a survey in Marlborough?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
